import { findAdvisor } from "../../shared/berater.js";
import {
    contactReasons,
    contactNotice,
    contactBookingUrl,
} from "../../shared/contact.js";
import "./contact.css";

// Auf Profilseiten: openContactDialog({ advisorId: profile.id }).
export function openContactDialog({
    advisorId,
    navigate = (url) => window.location.assign(url),
} = {}) {
    const advisor = findAdvisor(advisorId);
    const returnFocus = document.activeElement;
    const dialog = document.createElement("dialog");
    dialog.className = "contact-dialog";
    dialog.setAttribute("aria-labelledby", "contact-title");
    dialog.innerHTML = `
        <button class="contact-close" type="button" aria-label="Kontaktfenster schließen">×</button>
        <p class="contact-eyebrow">DEIN NÄCHSTER SCHRITT</p>
        <h2 id="contact-title">Berater kontaktieren</h2>
        <p class="contact-advisor"></p>
        <form class="contact-form">
            <div><label for="contact-email">Deine Buchungs-E-Mail</label>
                <input id="contact-email" name="email" type="email" autocomplete="email" maxlength="254" required aria-describedby="contact-email-help">
                <p id="contact-email-help" class="contact-help">Verwende die E-Mail-Adresse, mit der du dein Paket gebucht hast.</p>
            </div>
            <div><label for="contact-reason">Grund für den Kontakt</label>
                <select id="contact-reason" name="reason" required><option value="">Bitte auswählen</option></select>
            </div>
            <label class="contact-consent"><input name="simulationAccepted" type="checkbox" required><span></span></label>
            <p class="contact-status" role="status" aria-live="polite"></p>
            <button class="contact-submit" type="submit" disabled>Anfrage senden & Termin wählen</button>
        </form>`;
    dialog.querySelector(".contact-advisor").textContent = advisor
        ? `Deine Anfrage an ${advisor.name}`
        : "Die Berater-ID fehlt oder ist unbekannt. Bitte öffne das Fenster über ein Beraterprofil.";
    dialog.querySelector(".contact-consent span").textContent = contactNotice;
    const form = dialog.querySelector("form");
    const email = form.elements.email;
    const reason = form.elements.reason;
    for (const [value, label] of Object.entries(contactReasons)) {
        reason.add(new Option(label, value));
    }
    const status = dialog.querySelector(".contact-status");
    const submit = dialog.querySelector(".contact-submit");
    const close = dialog.querySelector(".contact-close");
    let busy = false;
    let sent = false;
    function update() {
        submit.disabled = busy || sent || !advisor;
        close.disabled = busy;
        email.disabled = busy || sent;
        reason.disabled = busy || sent;
        form.elements.simulationAccepted.disabled = busy || sent;
    }
    async function post(path, input) {
        const response = await fetch(path, {
            method: "POST",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify(input),
        });
        const result = await response.json();
        if (!response.ok)
            throw new Error(
                result.error?.message || "Die Anfrage ist fehlgeschlagen.",
            );
        return result;
    }
    email.addEventListener("input", () => {
        status.textContent = "";
    });
    form.addEventListener("submit", async (event) => {
        event.preventDefault();
        if (submit.disabled || !form.reportValidity()) return;
        const input = {
            email: email.value,
            advisorId,
            reason: reason.value,
            simulationAccepted: form.elements.simulationAccepted.checked,
        };
        busy = true;
        update();
        status.textContent =
            "E-Mail wird geprüft und simulierte Anfrage gesendet …";
        try {
            const result = await post("/api/contact", input);
            if (result.redirectUrl !== contactBookingUrl)
                throw new Error("Die Weiterleitungsadresse ist ungültig.");
            sent = true;
            status.textContent =
                "Beide Bestätigungen wurden in Mailpit angenommen. Microsoft Bookings wird geöffnet. ";
            const link = document.createElement("a");
            link.href = contactBookingUrl;
            link.textContent = "Weiter zur Terminwahl";
            status.append(link);
            navigate(contactBookingUrl);
        } catch (error) {
            status.textContent = `${error.message} Bei einem Verbindungsfehler bitte vor erneutem Senden Mailpit prüfen.`;
        } finally {
            busy = false;
            update();
        }
    });
    close.addEventListener("click", () => dialog.close());
    dialog.addEventListener("cancel", (event) => {
        if (busy) event.preventDefault();
    });
    const previousOverflow = document.body.style.overflow;
    dialog.addEventListener(
        "close",
        () => {
            document.body.style.overflow = previousOverflow;
            dialog.remove();
            returnFocus?.focus();
        },
        { once: true },
    );
    document.body.append(dialog);
    document.body.style.overflow = "hidden";
    update();
    dialog.showModal();
    email.focus();
    return dialog;
}